TM-9-2330-335-14-P

SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)

SEPTEMBER 2008

TM-9-2330-335-14-P - Page 571 of 640

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TM 9-2330-335-14&P

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FIELD AND SUSTAINMENT MAINTENANCE

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TROUBLESHOOTING HUBS

Table 1. Troubleshooting Hubs Using Piloted Disc Wheels.

EXAMPLE

PROBLEM

CAUSE

SOLUTION

Broken studs

1. Loose capnuts

2. Overloading

Replace the broken stud and the stud on each side of the

broken stud. If more than two studs are broken, replace the

entire set.

Stripped

threads on studs

or capnuts

Excessive torque

Replace stud and/or capnut and re-torque to specifications.

Damaged inner

or outer capnuts

1. Loose wheel

2. Overloading

Replace capnuts. Check for proper stud standout and

re-torque to specifications.

Damaged

threads on stud

or cap nut

Sliding wheel on

threads

Replace studs or capnuts per installation instructions.

Worn mounting

face on hub

1. Loose capnuts

2. Overloading

Replace hub following assembly procedures. When

reassembling inboard-mounted brake drum to hub, tighten

back nuts to specifications.

2